Duplicator



Jan. 15, 1935. J, H. HAUF 1,987,622

DUPLICATOR Filed Aug. 5, 1932 2 Sheets-Sheet l IlI hllllllulm J. H. HAUFJan. 15, 1935.

DUPLICATOR 2 Sheets-Sheet 2 Filed Aug. 5, 1932 n z a Patented Jan. 15,i935 UNITED ,STATES PATENT yOFFICE` 1,987,622v l f "DUPLICATOR y lJulius H. Hanf, lChicago," I Applicau'og'August `5, 1932,seria'No.s21,57s V18 claims. (01. 1411-133) This .invention relatesiii-general to a duplicating machine of the gelatine duplicator type andhas more; particular referencel `to an improved, cimpact, simplecarriage type machine of this c ass. Y

Among the objects of the invention are to provide a slidabletype ofpaper carriage; to provide an'improved gelatine duplicator clamp; to`provide means to engagethe side edges of `the duplicator copying sheet;to provide a carriage paper stop; to automatically applyrand lift thepaper sheeting roll asy the carriage is moved over the platen; toprovide improved' Ladjustable paper guides; `to make a 'folding.carriage for reducing the height of the duplicator to fold more,compactly; to .make a simple, light, inexpensive duplicating machine ofsheet metal; to make an improved duplicator sheet adapted to be clampedVat the ends and gripped at the sides for holding it'tightly in place;and in general to produce the' machine herein shown and described; i.' ni' Other objects of the invention will appear hereinafter, the preferredembodiments being illustratedin the accompanying drawings; In thedrawings, Fig.- 1 is a side elevation and Fig. 2 is a plan view of avduplicator constructed in .accordance with .the principles of thisinvention; i f 'Fig.'3 'is asection taken on the line 3-3.0f Fig'. 2;

Fig. 3a is a detail section showing the roller in restposition; f v "f iFig. 4 is a view of the carriage in open or unfoldedposition; 'v

Fig. r5 is a transversev section of the 'machine through the carriage;

Fig. 6 is a top view ofV fa simplied form of carriage; f

Fig. 7 isa section taken on -the line '7-7 of Fig'- Fig. 8` is a sectiontaken on the linea-8 of Fig 7;v. -1 .l .f Y

Fig. 9 villustrates a formof theinvention in which" the duplicator sheetis mounted on rolls below the pla-ten;

Fig. l0 is a sectional view of a-paper guide;

Fig. 11 is a detail section of one end of an y.improved duplicatorsheet; and f y Fig. 12 is afragmentary corner of' a duplicator sheethaving a side space for the engagement of lateral holding clamps. y

In duplicating machines of this type the means forattaching and holdingthe gelatine film is an important feature. In the present constructionthe gelatine copying nlm is simultaneously clamped at both ends of thebase. plate and may also be engaged at the sides for holding it rmly inplace. A carriage having van adjustable paper guide is movable in slidesat the sides of the base and includes a; platen which presses the paperwith 15, uniform pressure against the gelatine film and is automaticallylifted as soon as the applying pressure is released, thus preventing theplaten roller fromkforming a groove inthe lm 4and also pre-y ventingthe'V roller from receiving an impression llll; from the lm. f e

Referring now more particularly to the drawings,y a'supporting basedesignated vgenerally with the numeral' 1 is preferably formed of sheetmetal with depending sides 2 having bottom corner supl ports 3prefemblyy of. rubber and of a vacuumcup type. A top base plate 4 has'angular reinforcements 5 at the underside for strengthening. andstiffening it but still leaving a'considerablespace within the base 1for storing paper, carbons, du- 20 plicating films, and other articlesand supplies. 1

' A clamp-ing' frame vcomprising 'channeled' side guidev rails 6 and endcross pieces 7 and 8 is piv' otally connected to the base 1 atone endthereof by means of plates '9 secured to theframe and 25 pivots 10extending therethrough into the'base. The'cross piece 7 at one end has areversely bent vportion'll with slots 12 therein at intervals form.- ingclamping tongues 13, the upper extremities of which fare bent inwardlytoward the base 1 with Va 301 strip or-blocks 14 of resilient. materialsuch as sponge rubber or the like, placed back of the tongues forforcing them yieldingly and in addition to their own resilience in thedirection f the basel. "fjThecro'ss 'piece 8 at the other en d of ythe35 clamping frame lis also .provided with'a reversely bent resilientportion 15 having similar clamping tongues'l4 and with resilientmaterial 17 forcing them in the'direction of the'base. 1

t the sides of the base land overlapping the 49 edges thereofare springtongues '18 secured to or formed'asA a'continuation of the guide rails6, as shown more"'clearly"inFig. 5.. These clamping ngers 18 and theclamping tongues 13 and 16 at thee'ndsfof the frame are moved intoengage- 45 ment with vaygelatine copying nlm 20 which is placed upon thebase 4'- and has extremities which are inserted between thefends of thebaseand the clamping fingers 13 and 16 when the clamping frame 'israisedto the broken line position in 50- Fig.1.` 'f' The copying lmf20 has acopying composition of gelatine and glue 21 applied to a sheet offabricv 22 preferably of tough paper, cloth and the like,

and in the form shown vmore particularly Vby 55( Figs. 11 and 12, theends 23 and the sides 24 are turned over upon themselves and connectedby stitching 25 to strengthen and reinforce the lm. This also providesadditional means for the engagement of the clamping tongues 13 and 16 atthe ends of the iilm 20 and for the holding fingers 18 at the sides ofthe film.

In order to hold the clamping frame in film locking position a pair ofears 26 are secured to the `frarneat its free rend, each havingaperioration 27 adapted to be engaged by ya locking projection 28mounted on a spring 29 secured to the inside of the base 1 and extendingthroughA an opening 30 in the wall thereof which registersvv with theperforation 27 as the 'clamping frame i's pressed into lockingengagement withthe'lm. To release the frame these lprojections. 28- arepressed inwardly and the fre'eflend'of the"frarrie is raised, the ears26 ride over the roundecl'ends of the projections 28 which spring backthrough the openings 3h0 for vreengagement with theclamping frame.

Slidable upon the 'guide rails 6 is a carriage comprising side plates`31 veach having a channel portion 32 engagingin the channel'of theguide rail 6 and connected-over the top of the base by cross pieces 32,and la hinged carriage-member comprising opposite side kplates 33 hingedto the otherA carriage plates '-31 bypivots '34 and connected togetherfrom nthe top -offthe kplates 33 by a cross piece 35, the intermediateportion o f which forms a handle 36.. Extending :transversely of the'.uppercarriage 'member ,and secured to 'the' end plates 33 thereofis apaper table 37 havingan angularly down-turned rear edge A38 with 'slots39 adjacent the top for receiving paper guides 40. 1

Also mounted in the :upper `.carriage member and extending transverselythereof is a .roller platen 41 preferably made with `an outer cover4240i resilientmaterial such as rubberiand `'having an interior' metalshell or lrod 43 pivoted `at its ends in plates 44 which are hinged asshown in Fig.` 3 kupon pivots 45 at one endof each plate, the other freeend lof-the plate 44 being `pressed toward the inclined paperV table-3'7 by la spring 46 which extends around :the ,pivot 45 and over theplate 44,VV the paper -table 37 ,constituting an engagement for :thefree end of both pivoting plates 44land limiting the movementof theroller of the roller platen 4l .in the direction ofthe copyingrlm.

In order to ihold the carriagerparts in proper position with respect toeach other, the lower carriagemeniber-has. a vnumber of springs -471attached at Vone endto thesunder side ofone of. the cross pieces V32withV a free end or projection 48 engaging a fixed portion of theupper'carriage member such as the'paper table 3'7-rv and tending toraisethe upper carriagemember 4except ,when pressure is applied theretofeeding the paper. To limitv this movement, the lower carriage rmemberhasits side plates k31 each provided witha perforation 49fand'the 'sideplates 3370i the upper carriage member are provided with correspondingslots 50 into which extends a projection 51 carried by va spring 52attached at itsend to the inside of the' plate 31 and the projection 51adapted to be depressed to disengage the'projection frlom the'slot-50when it is desired to rotate-the upper carriage member upon its pivots34 to the position as. shown in Fig.` 4'. In normal operation, however,the Asprings 47 tend to raise the upper carriage member ywith respect tothe'sliding carriage thereby .raising the platen 41 from a'pQSi`Atension 53 of the cross piece 8 of the clamping `frameas shown in Fig.3a which also constitutes a 'stop for the insertion of a sheet of paper54 *,in'sertjedin the carriage. Intermediate the ends of this extensionv53 is a cut-out or depression 55 atwhich'theedge'of the paper may beengaged by the fingers of an operator for engaging and withdrawing itfrom the copying lm at this end after Ath'e `'carriage has 'been movedaway 4from this endof 'thepapen It -will be v.understoodthat inoperating 'thiscon struction a piece of paper 54 is inserted inthecarriage under the platen and against the extension 53 With'theiplaten411resting'on theextnsion. The forward movement ofthe carriage rst movesthe platen 'off of the extension on tothe paper, pressing vthepaperagainst the copyingfiilm until the desired length of kpaper has`been applied to the copying lm. If the `end of the kpaper is retainedin .the'carriage a reverse movement of the carriage will raise or pullvthe paper lfrom the copying lm 20 and by lholding the 'free .end ofthepaper against the lpaper table, the paper may ybe withdrawn without thecurling :effect which is so objectionable vin some machines.` If thecarriage 'haspassed entirely over Ythe paper, the starting .end of thepaper may be raised by engaging it `through-the `depression 55 andpulling it off of the film from this end. 1

A suitable paperguide '40 'for position-ing the paper in the carriagecomprises a channel shaped strip 5'7 having aspring Vmetal clipfattachedto one end 'thereof and the other vend embracing the opposite sides ofthelpaper-table 37, the clip being folded'upon itself and insertablethrough the slot 39 at the upper edge of the paper table 'andhaving anotch 59 for engaging the inclined edge 38 of the paper table forholding the guide in proper position with respect tothe slot. This guideis freely adjustable along the slots 39by simply pinching the two upperedges of the yclip together, thereby releasing it froml engagement withthe paper table and by making the guide member 57 in channel form, thesame guide .may be used' for opposite sides of the carriage.

Instead of a movable two piece carriage la slidable single 'piececarriage maybe used, as shown for example by Figs. 6, 7 and 8, in whichthe side pieces 60. arejjformed at their lower ends with a channelshaped section 61 to engage the guide rails '6 and they arelconnectedrcraver the top by a fixed handle 62. A rollerr platen 63 ismounted in arms 64 pivoted eccentrically to the side pieces, by pivots65 and pressed in Ynlm engaging position, by springs 66. A fixed papertable 67 is secured to the end pieces -at one side of the platen 63 andengages the free end of the arm 164 to `limit the movement of the platenin the direction vedged by the spring 66. The arms 64 are connected by across piece 68 with a downwardly turned portion adjacent the handle 62so that in operating this carriage back and forth upon ythe base the`fingers or bandi-ofthe operati-)rieure Inaiveregainst'the" dresspiece'-f68 ini-one direction "of "movementftofraise m'ove'd inthe otherdirection-the l"crossf-'pi-ce*A 68 is not engaged thereby, allowing theplaten to press-the papeiL-lfagainst the copying film as desired.

Instead of having a copying film of a size to fit the base plate only, acontinuous film 70 may be provided as shown in Fig. 9, mounted uponrollers '71 at the underside of a base 72 and having a hinged clampingframe 73 for engaging the film at the sides and ends asv abovedescribed. Either a double or a single type of carriage may be used withthis structure as set forth above.

One of the principal objects in making the carriage in two parts is torotate the upper member with respect to the other one` particularly asshown in Fig. 4, so that the entire duplicator may be packed morecompactly` and fity more flatly in a carton or in a drawer. Sheet metalis used throughout wherever practical to make the construction light andstrong and it is intended that where necessary the parts be securedtogether by spot welding which simplifies the construction andfabrication of the parts.

I claim:

1. A duplicator comprising a film holding base and means comprising aframe pivoted at the sides below the top of one end of the base andapplied over both ends of the base for clamping opposite ends of thefilm.

2. In a duplicator, a film holding base, clamping means comprising asingle frame extending over both ends of the base and pivoted theretoand movable simultaneously to engage and clamp opposite ends of thefilm.

3. In a duplicator, a film holding base, a clamping frame for the filmextending over opposite ends of the base, pivoted to the base at one endand movable into engagement with the ends of a film to clamp both ofthem against the base.

4. In a duplicator, a film holding base and clamping means thereforcomprising a frame extending about the base having resilient fingersextending over the opposite edges of the base and movable intoengagement with the edges of a duplicator film lying thereon.

5. In a duplicator, a film holding base, clamping means thereforcomprising a frame extending about the base and movable downwardly overthe ends of the film to clamp them between the frame and the base, andyielding fingers also carried by the frame adapted to engage the film atthe sides thereof for additionally holding it in place.

6. In a duplicator, a film holding base, a duplicator film extendingover the base and overlapping it at the ends, and a clamping frameapplied over opposite ends of the base and having yielding means at theends of the frame for resiliently clamping the ends of the film betweenthe frame and the base.

7. In a duplicator, a pair of side guide rails and a carriage slidablealong the guide rails, the carriage having a part rotatable beyond theend of the guide rails for folding it more compactly.

8. In a duplicator, a base, a copying film applied thereto, clampingmeans comprising a frame extending over opposite ends of the base,pivoted to the base and engageable with the film to hold it on the base,and releasable means forholding the. clampingframe with respect toi-,hgbas'gxq I 5 f '1495- n-afduplcaton a flm'supporting base, acla'nping frame forl the film surrounding the base andpivotedl thereto,the frame comprising side guide railsan'dfend cross `pieces andresilient means extending from-the crosspieces for clamping the film inplace, and paper holding means slidable along the side guide rails forapplying sheets to the film.

l0. In a duplicator, a base, a copy film resting thereon, means inconnection with the base for clamping the film thereon, said meanscomprising side guide rails, a carriage slidable along the guide rails,a rotatable platen and means for mounting the platen in the carriage tomove it toward and from' the film in applying sheets thereto andwithdrawing them therefrom.

11. In a duplicator, a film holding base, means for clamping a film tothe base, guide rails, a two part carriage slidable upon the guide railshaving a hinged member movable relatively to the other part, a platencarried by the said hinged member and spring means between the carriageparts for raising the platen carrying part from the sliding part.

12. In a duplicator, a film supporting base, means for clamping the filmon the base, guide rails at the sides of the base, a paper carriagehaving a part slidable on the rails, a platen carrying part hingedthereto, means tending to press the platen against the film, and springmeans tending to raise the platen carrying part from the other part.

13. In a duplicator, a base member and a copying film thereon, guiderails at the side of the member, a paper carriage having a part slidableon the rails, a platen carrier hinged thereto, spring means tending toraise the platen carrier from the slidable carriage, and means forming areleasable connection for limiting the normal raising movement and foroverturning the platen carrier at one end of the slidable carriage.

1 4. In a duplicator, a film supporting base, a carriage movable on thebase, a paper platen hinged in the carriage, a spring tending to raisethe platen in the carriage, and means including a handle for applyingthe platen to the film in one direction of movement of the carriage andthe spring automatically raising the platen from engaging the film inmoving the carriage by the handle in the other direction of movement.

15. In a duplicator, a film supporting base, a carriage movable in thebase, a paper platen hinged in the carriage and means including a handlefor applying the platen to the lm in one direction of movement of thecarriage and for automatically raising the platen from engaging the filmin the other direction of movement of the carriage, the platen mountingincluding a crosspiece adjacent the handle adapted to be manuallyengaged for raising the platen in one direction of movement of thecarriage.

16. In a duplicator, a paper carriage including a platen, a paper tableinclined thereto having a downwardly turned rear edge with a slot in theupper edge, and a paper guide comprising a member overlying the table toengage paper at either side thereof and a V-shaped spring clip securedto the back of the guide and insertable in the slot with a notch in oneside of the clip to engage the edge of the slot and hold the guide inplace.

17. In a duplicator, a film supporting base, a carriage slidable alongthev base, means forming a xed raised rest at one end of the base, apaper platen movably mounted' in Vthe carriage` and adapted to besupported on the rest at the ezsid` of its movement, the rest limitingthe position of the end of aosheet tobe printed when it is inserted inthe carriage underthe platen, and means to press the platen against thevlm when'the can riagemoves it from saidrest.

edge.- t

l JULIUs H. HAUF.

